摘要
传输线损耗性能测试是高速PCB信号完整性的重要表征手段．文章先介绍了业内应用较多的几种PCB损耗测试方法的原理及应用场景．而后研究了长短线长度、数量、残桩长度等因素对Delta L测试结果的影响．并进一步分析对比了业内常用的SET2DIL方法、TRL方法与Delta L方法的精度差异。研究表明，Delta L方法能有效去除过孔效应的影响。在12．89GHz时的测试精度与TRL方法相当，是一种操作简便、耗时短、精度高的损耗管控方法。
The insertion loss of transmission line is an important indicator for the signal integrity of high-speed PCB. This paper provides overview of several PCB loss test methods which are widely used in the industry, and then the influence of line length, number of lines, stub length on the insertion loss of Delta L method were investigated. Finally, the accuracy difference between SET2DIL, TRL and Delta L method were analyzed. The results showed that Delta-L could remove the via effect efficiently and characterize PCB electrical performance accurately.
作者
程柳军
李艳国
陈蓓
Cheng Liujun;Li Yanguo;Chen Bei
出处
《印制电路信息》
2018年第A02期411-419,共9页
Printed Circuit Information
作者简介
程柳军，硕士，技术中心研发工程师，主要从事高速／高频PCB材料测试认证及高速PCB相关技术开发工作。
